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<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>227237</bug_id>
          
          <creation_ts>2021-06-21 14:50:37 -0700</creation_ts>
          <short_desc>[BigSur Wk1] imported/w3c/web-platform-tests/css/css-will-change/will-change* tests are flaky failing</short_desc>
          <delta_ts>2021-06-28 13:52:14 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>New Bugs</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=226307</see_also>
    
    <see_also>https://bugs.webkit.org/show_bug.cgi?id=225704</see_also>
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Amir Mark Jr">amir_mark</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>webkit-bot-watchers-bugzilla</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1771469</commentid>
    <comment_count>0</comment_count>
    <who name="Amir Mark Jr">amir_mark</who>
    <bug_when>2021-06-21 14:50:37 -0700</bug_when>
    <thetext>imported/w3c/web-platform-tests/css/css-will-change/will-change-fixpos-cb-filter-1.html
imported/w3c/web-platform-tests/css/css-will-change/will-change-stacking-context-filter-1.html
imported/w3c/web-platform-tests/css/css-will-change/will-change-stacking-context-opacity-1.html

Are flaky image failures on Big Sur Wk1 Release, Apple Silicon Wk1 Release and Debug.


History:

https://results.webkit.org/?suite=layout-tests&amp;suite=layout-tests&amp;suite=layout-tests&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-will-change%2Fwill-change-fixpos-cb-filter-1.html&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-will-change%2Fwill-change-stacking-context-filter-1.html&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-will-change%2Fwill-change-stacking-context-opacity-1.html


Image Failure:

https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r279076%20(3548)/imported/w3c/web-platform-tests/css/css-will-change/will-change-fixpos-cb-filter-1-diff.png
https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r279076%20(3548)/imported/w3c/web-platform-tests/css/css-will-change/will-change-stacking-context-filter-1-diff.png
https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r279076%20(3548)/imported/w3c/web-platform-tests/css/css-will-change/will-change-stacking-context-opacity-1-diff.png</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1771470</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2021-06-21 14:51:06 -0700</bug_when>
    <thetext>&lt;rdar://problem/79581733&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1771472</commentid>
    <comment_count>2</comment_count>
      <attachid>431912</attachid>
    <who name="Amir Mark Jr">amir_mark</who>
    <bug_when>2021-06-21 14:54:01 -0700</bug_when>
    <thetext>Created attachment 431912
will-change-stacking-context-opacity-1-diff</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1771473</commentid>
    <comment_count>3</comment_count>
      <attachid>431913</attachid>
    <who name="Amir Mark Jr">amir_mark</who>
    <bug_when>2021-06-21 14:54:31 -0700</bug_when>
    <thetext>Created attachment 431913
will-change-stacking-context-filter-1-diff</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1771474</commentid>
    <comment_count>4</comment_count>
      <attachid>431914</attachid>
    <who name="Amir Mark Jr">amir_mark</who>
    <bug_when>2021-06-21 14:55:15 -0700</bug_when>
    <thetext>Created attachment 431914
will-change-fixpos-cb-filter-1-diff</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1771476</commentid>
    <comment_count>5</comment_count>
    <who name="Amir Mark Jr">amir_mark</who>
    <bug_when>2021-06-21 15:02:48 -0700</bug_when>
    <thetext>It appears these tests have been flaky since being introduced around r277375, not a clear regression point.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1771542</commentid>
    <comment_count>6</comment_count>
    <who name="Amir Mark Jr">amir_mark</who>
    <bug_when>2021-06-21 17:06:07 -0700</bug_when>
    <thetext>Updated test expectations:

https://trac.webkit.org/changeset/279092/webkit</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1773179</commentid>
    <comment_count>7</comment_count>
    <who name="Ryan Haddad">ryanhaddad</who>
    <bug_when>2021-06-28 13:52:14 -0700</bug_when>
    <thetext>Looking at the results in https://build.webkit.org/results/Apple-BigSur-Release-WK1-Tests/r279076%20(3548)/results.html, the &quot;actual&quot; image is all gray or white.</thetext>
  </long_desc>
      
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          <attachment
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            <attachid>431914</attachid>
            <date>2021-06-21 14:55:15 -0700</date>
            <delta_ts>2021-06-21 14:55:15 -0700</delta_ts>
            <desc>will-change-fixpos-cb-filter-1-diff</desc>
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            <type>image/png</type>
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